Core Java

Core Java is a widely-used programming language that serves as the foundation for developing Java applications. It provides a robust and secure platform for building various types of software, ranging from desktop applications to web-based systems. If you’re interested in learning Core Java, here’s an overview of what you can expect from a typical Java language course:

Course Content on Core Java

• Introduction to java

  • Primary components of a Java program: Class, Interface, Enum and Annotation

  • Writing, compiling and running a Java program from command line

  • What is Java bytecode?

  • JVM and JRE

  • Java bytecode interpreter and JIT compiler

  • How to work with Eclipse, Netbeans and IntelliJ IDEA

• Class and Object

  • What is an object: object properties and operations?

  • What is a class

  • How does a class describe properties of objects: private fields, accessor and mutator methods?

  • How does a class describe operations using methods?

  • Method overloading

  • The ‘this’ keyword

• Constructors

  • What is a constructor

  • Default constructor

  • Constructor overloading

  • Constructor chaining

• Static or class variables and methods

  • Static variable

  • Static method

• Some advanced class concepts

  • Static and non-static field initializers

  • Static and non-static initialization blocks

  • Order of initializations

  • Private constructors and singleton class**

• Nested classes**

  • Static member nested classes

  • Member inner classes

  • Local inner classes

  • Anonymous inner classes

• Packages in Java

  • Package concept and its advantages

  • How to place a class inside a package?

  • How to import a class?

  • The default access modifiers

  • Compiling and running java classes

• Inheritance

  • What is inheritance: java inheritance mechanism

  • Inheriting fields and methods from superclass

  • Adding fields and methods in subclass

  • Upcasting, downcasting and instanceof operator

  • Method overriding, dynamic binding runtime polymorphism

  • Use of ‘super’ keyword

  • Constructor chaining using ‘super’ keyword

  • Inheritance and access modifiers

  • Final classes

  • Concept of single rooted class hierarchy in java: the ‘Object’ class

• Abstract classes and interfaces

  • Abstract method

  • Abstract class

  • Abstract class and inheritance

  • Interfaces and its implementation

  • Interfaces and multiple inheritance

  • Field declarations within an interface

• Exception handling

  • Why do we need exception handling in java?

  • Exception handling mechanism in java using try, catch and finally

  • Stack unwinding

  • Difference between Exceptions and Errors

  • Throwable’ class

  • Checked and unchecked exception

  • Custom exceptions

  • Try with resources**

• Multithreading

  • Concept of processes and threads

  • Multithreading by extending Thread class

  • Multithreading by implementing Runnable interface

  • Life cycle of a thread

  • Thread synchronization: concept of monitor, synchronized blocks and synchronized methods

  • Inter thread communication by guarded blocks: wait, notify and notifyAll

• Generics

  • Why use Generics

  • Generic Types

  • Raw Types

  • Generic Methods

  • Bounded Type parameters

• Java collection framework

  • Introduction to Java collection framework

  • Core collection interfaces and their implementations: Collection, Set, List, Queue, Deque, Map, SortedSet and SortedMap

• Basic I/O

  • Concept of Input and Output in Java

  • Byte Streams and Character Streams

  • Buffered Streams

  • Data and Object Streams

  • File I/O